package jdbc;

import com.alibaba.druid.pool.DruidDataSource;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 * 数据库工具类，维护数据库链接
 */
public class DBUtil {
    private static DruidDataSource dataSource = new DruidDataSource();
    static {
//        try {
//            Class.forName("com.mysql.cj.jdbc.Driver");
//        } catch (ClassNotFoundException e) {
//            e.printStackTrace();
//        }
     dataSource.setUrl("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true");
    dataSource.setUsername("root");
    dataSource.setPassword("root");
    dataSource.setMinIdle(1);;
    dataSource.setMaxActive(20);//最大连接数
     dataSource.setInitialSize(5);//初始连接数

    }
    public static Connection getConnection() throws SQLException {
//        return DriverManager.getConnection();
//                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
//                "root",
//                "root"
//        );
        return dataSource.getConnection();
    }
}
